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100167 (1993 UN2)
Classification: Main-belt Asteroid          SPK-ID: 2100167
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1815411685759283 1.1863e-07  
a 2.56535855470336 1.5784e-08 au
q 2.099640364866258 3.1093e-07 au
i 3.442666309519527 7.8407e-06 deg
node 312.144255799981 7.7939e-05 deg
peri 190.9349992918775 7.9127e-05 deg
M 87.91349388068109 1.4426e-05 deg
tp 2458634.000338804574
(2019-May-30.50033880)
5.8007e-05 TDB
period 1500.792110588009
4.11
1.3851e-05
3.792e-08
d
yr
n .2398733291974412 2.2139e-09 deg/d
Q 3.031076744540462 1.865e-08 au
  Orbit Determination Parameters
   # obs. used (total)      589  
   data-arc span      9267 days (25.37 yr)  
   first obs. used      1993-10-21  
   last obs. used      2019-03-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53801  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:12:56  

Additional Information
 Earth MOID = 1.11238 au 
 Jupiter MOID = 1.99218 au 
 T_jup = 3.407 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456249.5 (2012-Nov-18.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1819708838894362 1.1858e-07  
q 2.098282356467389 3.1174e-07 au
tp 2455633.823086746057
(2011-Mar-13.32308675)
4.6545e-05 TDB
node 312.1781749191928 7.7911e-05 deg
peri 190.9892387943951 7.9067e-05 deg
i 3.443729926857724 7.8403e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      589  
   data-arc span      9267 days (25.37 yr)  
   first obs. used      1993-10-21  
   last obs. used      2019-03-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53801  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:12:56  

Additional Information
 Jupiter MOID = 1.99218 au 
 T_jup = 3.407 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.406005443537175E-14 -3.694022766363728E-14 1.150334605037899E-12 -3.217879669964797E-14 8.270917491106977E-13 -1.645279947140477E-15
q -3.694022766363728E-14 9.71837794681331E-14 -2.869820598226203E-12 8.367056092441673E-14 -2.125941465501936E-12 4.545160345652594E-15
tp 1.150334605037899E-12 -2.869820598226203E-12 2.166470763529738E-9 1.89615021907641E-13 6.100244625963208E-10 1.12329986747343E-12
node -3.217879669964797E-14 8.367056092441673E-14 1.89615021907641E-13 6.070057951201608E-9 -6.059990480808377E-9 2.916490956349931E-10
peri 8.270917491106977E-13 -2.125941465501936E-12 6.100244625963208E-10 -6.059990480808377E-9 6.251524165633518E-9 -2.908569110098472E-10
i -1.645279947140477E-15 4.545160345652594E-15 1.12329986747343E-12 2.916490956349931E-10 -2.908569110098472E-10 6.147020446358682E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.1   n/a MPO417504  

100167 (1993 UN2)          Discovered 1993-Oct-21 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1993 UN2 = 1997 WC17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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